Release Notes

Table Of Contents
Dmesg displays error messages when NVMe device is
surprise removed
Description: Dmesg or /var/log/messages show the following error messages after an NVMe device is unbound from
the NVMe driver and surprise removed:
kernel: pcieport 0000:b0:06.0: Timeout waiting for Presence Detect
kernel: pcieport 0000:b0:06.0: link training error: status 0x8001
kernel: pcieport 0000:b0:06.0: Failed to check link status
Applies to: Red Hat Enterprise Linux 8.2 and later
Solution: The issue is a cosmetic issue and can be ignored.
Cause: The error that is displayed is due to an issue with the pciehp driver.
Systems
affected:
Dell EMC PowerEdge R740XD and Dell EMC PowerEdge R7525.
Tracking number: 180987
Status of the RAID 0 logical volume is displayed as
Available when one of the members of the RAID array
is surprise removed
Description:
When Logical Volume Manager (LVM) is used to create a RAID 0 array and a member of the RAID array is
surprise removed, the lvdisplay command shows the logical volume (LV) status as 'Available'.
Applies to: Red Hat Enterprise Linux 8.2 and later.
Solution: Use the command lvs -o +lv_health_status to check the status of the RAID array. The command displays
the output Partial when a member of the RAID array is removed.
Systems
affected:
All Dell EMC PowerEdge systems supporting NVMe Surprise Removal.
Tracking number: 175865
/proc/mdstat and mdadm -D commands display
incorrect statuses when two NVMe devices are
surprise removed from a RAID 5 MD array
Description:
When two of three NVMe devices are surprise removed from a RAID 5 MD array, the command cat/
proc/mdstat displays the array status incorrectly as active. Similarly, when the status of the MD RAID
is queried using the mdadm -D /dev/mdN command, the number of active and working devices that
are displayed is two. Only the status of the array reported is incorrect. However, when I/O operations are
performed, I/O errors are observed as expected.
Applies to: Red Hat Enterprise Linux 8.2 and later.
Cause: When the number of devices that are surprise removed exceeds the number of devices that are required
for the array to function, the MD status is not updated.
Systems
affected:
All Dell EMC PowerEdge systems supporting NVMe Surprise Removal.
24 Known issues